Umm....I'm not so sure were all on the same page as far as "fuel dots" go. A fuel dot to me is simply a fancy looking little fitting that your fueling line sticks out of through your cowl/fuselage with a stopper in. I think some of you might be thinking of a "kwik-fill" fuel valve. It also is a fitting for your cowl/fuselage,but is actually a valve used for fueling. I've never used a kwikfill valve,but thinking about it now.......this would work for what f_shawn is trying to do without the need for 3 tank lines. It would go inbetween the carb and tank and shut the fuel off to the carb while fueling. I will say that I have heard alot of negative things about them leaking and again,I personally would not recommend one because again,I like a straight connection from my tank to the carb with as little a chance as possible for an air leak or any other leak.

Here a pic of a fuel dot(2 of them in this pic).....and a kwik fill valve.

http://centralhobbies.com/Fuel/fuel_...s/tetdots.html

http://www3.towerhobbies.com/cgi-bin...?&I=LXD745&P=0